del transaction before lock before wlock
This way rollbacks happen while the repo is still locked.
Deleting lock before wlock is not strictly necessary, but is
more consistent with the locking order.
# record.py
#
# Copyright 2007 Bryan O'Sullivan <bos@serpentine.com>
#
# This software may be used and distributed according to the terms of
# the GNU General Public License, incorporated herein by reference.
'''interactive change selection during commit'''
from mercurial.i18n import _
from mercurial import cmdutil, commands, cmdutil, hg, mdiff, patch, revlog
from mercurial import util
import copy, cStringIO, errno, operator, os, re, shutil, tempfile
lines_re = re.compile(r'@@ -(\d+),(\d+) \+(\d+),(\d+) @@\s*(.*)')
def scanpatch(fp):
lr = patch.linereader(fp)
def scanwhile(first, p):
lines = [first]
while True:
line = lr.readline()
if not line:
break
if p(line):
lines.append(line)
else:
lr.push(line)
break
return lines
while True:
line = lr.readline()
if not line:
break
if line.startswith('diff --git a/'):
def notheader(line):
s = line.split(None, 1)
return not s or s[0] not in ('---', 'diff')
header = scanwhile(line, notheader)
fromfile = lr.readline()
if fromfile.startswith('---'):
tofile = lr.readline()
header += [fromfile, tofile]
else:
lr.push(fromfile)
yield 'file', header
elif line[0] == ' ':
yield 'context', scanwhile(line, lambda l: l[0] in ' \\')
elif line[0] in '-+':
yield 'hunk', scanwhile(line, lambda l: l[0] in '-+\\')
else:
m = lines_re.match(line)
if m:
yield 'range', m.groups()
else:
raise patch.PatchError('unknown patch content: %r' % line)
class header(object):
diff_re = re.compile('diff --git a/(.*) b/(.*)$')
allhunks_re = re.compile('(?:index|new file|deleted file) ')
pretty_re = re.compile('(?:new file|deleted file) ')
special_re = re.compile('(?:index|new|deleted|copy|rename) ')
def __init__(self, header):
self.header = header
self.hunks = []
def binary(self):
for h in self.header:
if h.startswith('index '):
return True
def pretty(self, fp):
for h in self.header:
if h.startswith('index '):
fp.write(_('this modifies a binary file (all or nothing)\n'))
break
if self.pretty_re.match(h):
fp.write(h)
if self.binary():
fp.write(_('this is a binary file\n'))
break
if h.startswith('---'):
fp.write(_('%d hunks, %d lines changed\n') %
(len(self.hunks),
sum([h.added + h.removed for h in self.hunks])))
break
fp.write(h)
def write(self, fp):
fp.write(''.join(self.header))
def allhunks(self):
for h in self.header:
if self.allhunks_re.match(h):
return True
def files(self):
fromfile, tofile = self.diff_re.match(self.header[0]).groups()
if fromfile == tofile:
return [fromfile]
return [fromfile, tofile]
def filename(self):
return self.files()[-1]
def __repr__(self):
return '<header %s>' % (' '.join(map(repr, self.files())))
def special(self):
for h in self.header:
if self.special_re.match(h):
return True
def countchanges(hunk):
add = len([h for h in hunk if h[0] == '+'])
rem = len([h for h in hunk if h[0] == '-'])
return add, rem
class hunk(object):
maxcontext = 3
def __init__(self, header, fromline, toline, proc, before, hunk, after):
def trimcontext(number, lines):
delta = len(lines) - self.maxcontext
if False and delta > 0:
return number + delta, lines[:self.maxcontext]
return number, lines
self.header = header
self.fromline, self.before = trimcontext(fromline, before)
self.toline, self.after = trimcontext(toline, after)
self.proc = proc
self.hunk = hunk
self.added, self.removed = countchanges(self.hunk)
def write(self, fp):
delta = len(self.before) + len(self.after)
fromlen = delta + self.removed
tolen = delta + self.added
fp.write('@@ -%d,%d +%d,%d @@%s\n' %
(self.fromline, fromlen, self.toline, tolen,
self.proc and (' ' + self.proc)))
fp.write(''.join(self.before + self.hunk + self.after))
pretty = write
def filename(self):
return self.header.filename()
def __repr__(self):
return '<hunk %r@%d>' % (self.filename(), self.fromline)
def parsepatch(fp):
class parser(object):
def __init__(self):
self.fromline = 0
self.toline = 0
self.proc = ''
self.header = None
self.context = []
self.before = []
self.hunk = []
self.stream = []
def addrange(self, (fromstart, fromend, tostart, toend, proc)):
self.fromline = int(fromstart)
self.toline = int(tostart)
self.proc = proc
def addcontext(self, context):
if self.hunk:
h = hunk(self.header, self.fromline, self.toline, self.proc,
self.before, self.hunk, context)
self.header.hunks.append(h)
self.stream.append(h)
self.fromline += len(self.before) + h.removed
self.toline += len(self.before) + h.added
self.before = []
self.hunk = []
self.proc = ''
self.context = context
def addhunk(self, hunk):
if self.context:
self.before = self.context
self.context = []
self.hunk = data
def newfile(self, hdr):
self.addcontext([])
h = header(hdr)
self.stream.append(h)
self.header = h
def finished(self):
self.addcontext([])
return self.stream
transitions = {
'file': {'context': addcontext,
'file': newfile,
'hunk': addhunk,
'range': addrange},
'context': {'file': newfile,
'hunk': addhunk,
'range': addrange},
'hunk': {'context': addcontext,
'file': newfile,
'range': addrange},
'range': {'context': addcontext,
'hunk': addhunk},
}
p = parser()
state = 'context'
for newstate, data in scanpatch(fp):
try:
p.transitions[state][newstate](p, data)
except KeyError:
raise patch.PatchError('unhandled transition: %s -> %s' %
(state, newstate))
state = newstate
return p.finished()
def filterpatch(ui, chunks):
chunks = list(chunks)
chunks.reverse()
seen = {}
def consumefile():
consumed = []
while chunks:
if isinstance(chunks[-1], header):
break
else:
consumed.append(chunks.pop())
return consumed
resp = None
applied = {}
while chunks:
chunk = chunks.pop()
if isinstance(chunk, header):
fixoffset = 0
hdr = ''.join(chunk.header)
if hdr in seen:
consumefile()
continue
seen[hdr] = True
if not resp:
chunk.pretty(ui)
r = resp or ui.prompt(_('record changes to %s? [y]es [n]o') %
_(' and ').join(map(repr, chunk.files())),
'(?:|[yYnNqQaA])$') or 'y'
if r in 'aA':
r = 'y'
resp = 'y'
if r in 'qQ':
raise util.Abort(_('user quit'))
if r in 'yY':
applied[chunk.filename()] = [chunk]
if chunk.allhunks():
applied[chunk.filename()] += consumefile()
else:
consumefile()
else:
if not resp:
chunk.pretty(ui)
r = resp or ui.prompt(_('record this change to %r? [y]es [n]o') %
chunk.filename(), '(?:|[yYnNqQaA])$') or 'y'
if r in 'aA':
r = 'y'
resp = 'y'
if r in 'qQ':
raise util.Abort(_('user quit'))
if r in 'yY':
if fixoffset:
chunk = copy.copy(chunk)
chunk.toline += fixoffset
applied[chunk.filename()].append(chunk)
else:
fixoffset += chunk.removed - chunk.added
return reduce(operator.add, [h for h in applied.itervalues()
if h[0].special() or len(h) > 1], [])
def record(ui, repo, *pats, **opts):
'''interactively select changes to commit'''
if not ui.interactive:
raise util.Abort(_('running non-interactively, use commit instead'))
def recordfunc(ui, repo, files, message, match, opts):
if files:
changes = None
else:
changes = repo.status(files=files, match=match)[:5]
modified, added, removed = changes[:3]
files = modified + added + removed
diffopts = mdiff.diffopts(git=True, nodates=True)
fp = cStringIO.StringIO()
patch.diff(repo, repo.dirstate.parents()[0], files=files,
match=match, changes=changes, opts=diffopts, fp=fp)
fp.seek(0)
chunks = filterpatch(ui, parsepatch(fp))
del fp
contenders = {}
for h in chunks:
try: contenders.update(dict.fromkeys(h.files()))
except AttributeError: pass
newfiles = [f for f in files if f in contenders]
if not newfiles:
ui.status(_('no changes to record\n'))
return 0
if changes is None:
changes = repo.status(files=newfiles, match=match)[:5]
modified = dict.fromkeys(changes[0])
backups = {}
backupdir = repo.join('record-backups')
try:
os.mkdir(backupdir)
except OSError, err:
if err.errno == errno.EEXIST:
pass
try:
for f in newfiles:
if f not in modified:
continue
fd, tmpname = tempfile.mkstemp(prefix=f.replace('/', '_')+'.',
dir=backupdir)
os.close(fd)
ui.debug('backup %r as %r\n' % (f, tmpname))
util.copyfile(repo.wjoin(f), tmpname)
backups[f] = tmpname
fp = cStringIO.StringIO()
for c in chunks:
if c.filename() in backups:
c.write(fp)
dopatch = fp.tell()
fp.seek(0)
if backups:
hg.revert(repo, repo.dirstate.parents()[0], backups.has_key)
if dopatch:
ui.debug('applying patch\n')
ui.debug(fp.getvalue())
patch.internalpatch(fp, ui, 1, repo.root)
del fp
repo.commit(newfiles, message, opts['user'], opts['date'], match,
force_editor=opts.get('force_editor'))
return 0
finally:
try:
for realname, tmpname in backups.iteritems():
ui.debug('restoring %r to %r\n' % (tmpname, realname))
util.copyfile(tmpname, realname)
os.unlink(tmpname)
os.rmdir(backupdir)
except OSError:
pass
return cmdutil.commit(ui, repo, recordfunc, pats, opts)
cmdtable = {
"record":
(record,
[('A', 'addremove', None,
_('mark new/missing files as added/removed before committing')),
('d', 'date', '', _('record datecode as commit date')),
('u', 'user', '', _('record user as commiter')),
] + commands.walkopts + commands.commitopts,
_('hg record [OPTION]... [FILE]...')),
}